Tata Steel introduces XPF800 for lighter and innovative chassis applications

Tata Steel has launched XPF800, a hot-rolled steel for demanding chassis applications. The new steel is said to offer an unprecedented mix of strength and formability, which gives manufacturers increased design freedom and weight-saving potential, while still being able to create components that guarantee stiffness and fatigue resistance in the chassis system.

XPF800, produced at a tensile strength level of 800MPa, is the first grade of the XPF range, with XPF650 and XPF1000 in development. A hot-dip galvanised range is also in development, which will allow thinner gauges to be used effectively, without running the risk of corrosion that is a concern with thinner steel applications.

The XPF800’s high formability is said to enable light weighting of complex vehicle components, while achieving the same fatigue performance as standard equivalent complex phase steels and high-strength low-alloy steels (HSLA). From a vehicle weight perspective, the XPF range is claimed to allow manufacturers to create parts that can be more than 15% lighter than those produced with equivalent advanced steel grades.

The improved stretch flangeability of XPF800, with an average Hole Expansion Capacity of 90%, enables geometric changes to a part’s design that increases stiffness while delivering mass reduction. When compared to HR CP800, the hot-rolled XPF800 steel combines this higher stretch flangeability with higher tensile elongation. These product characteristics lead to reduced risk of edge shearing, allowing additional flanges and deep sections to be incorporated in the design to maintain, or even improve the end-product performance.

These factors all support automotive manufacturers to optimise their total cost of ownership. XPF also creates less material waste, reducing downtime of the production line when making complex parts.

Freek Schut, Tata Steel’s European sales director for automotive, said: “Working alongside our proven body-in-white products such as MagiZinc, Serica and HyperForm, the XPF range further demonstrates Tata Steel’s expertise to offer the lowest total cost of ownership in the chassis area.”

Tom Austin-Morgan

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